<template>
    <div> 
        <div class="search">
            <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音">
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" 
                v-for="item of list" :key="item.id"
                @click="handleCityClick(item.name)">{{item.name}}</li>
                <li class="search-item border-bottom"
                v-show="hasNoData">没有找到匹配数据</li>
            </ul>
        </div>
    </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapState,mapMutations } from 'vuex'
export default {
    name:'CitySearch',
    props: {
        cities:Object
    },
    data () {
        return {
            keyword:'',
            list: [],
            timer: null
        }
    },
    computed: {
        hasNoData () {
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            if (this.timer) {
                clearTimeout(this.timer)
            }
            if (!this.list) {
                this.list = []
                return
            }
            this.timer = setTimeout( () => {
                const result = []
                for (let i in this.cities) {
                    this.cities[i].forEach(value => {
                        if (value.spell.indexOf(this.keyword) > -1 ||
                        value.name.indexOf(this.keyword) > -1) {
                            result.push(value)
                        }
                    });
                }
                this.list = result
            },100)
        }
    },
    methods: {
        handleCityClick (city) {
            this.changeCity(city)
            this.$router.push('/')
        },
       ...mapMutations (['changeCity'])
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search)
    }
}
</script>
<style lang="stylus" scoped>
    @import '~styles/varibles.styl'
    .search
        padding 0 .1rem
        height .72rem
        background $bgColor
        .search-input
            box-sizing border-box
            width 100%
            height .62rem
            padding 0 .1rem
            line-height .62rem
            text-align center
            border-radius .06rem
            color #666
    .search-content
        z-index 1
        overflow hidden
        position absolute
        top 1.58rem
        left 0
        right 0
        bottom 0
        background #eeeeee
        .search-item
            line-height .62rem
            padding-left .2rem
            background #ffffff
            color #666



</style>